python + unittest + HTMLTestRunner 执行suite用例报错

Traceback (most recent call last):

File "C:/ws/Selenium-Framework-master/testsuites/TestRunner.py", line 48, in

runner.run(createsuite1())

File "C:\Python27\Lib\HTMLTestRunner.py", line 628, in run

test(result)

File "C:\Python27\Lib\unittest\suite.py", line 70, in __call__

return self.run(*args, **kwds)

File "C:\Python27\Lib\unittest\suite.py", line 100, in run

self._handleClassSetUp(test, result)

File "C:\Python27\Lib\unittest\suite.py", line 153, in _handleClassSetUp

self._addClassOrModuleLevelException(result, e, errorName)

File "C:\Python27\Lib\unittest\suite.py", line 198, in _addClassOrModuleLevelException

result.addError(error, sys.exc_info())

File "C:\Python27\Lib\HTMLTestRunner.py", line 584, in addError

output = self.complete_output()

File "C:\Python27\Lib\HTMLTestRunner.py", line 558, in complete_output

return self.outputBuffer.getvalue()

AttributeError: '_TestResult' object has no attribute 'outputBuffer'

百度搜索，不能解决问题，谷歌无法上网，只能想办法单独执行用例，报错：

Failure

Traceback (most recent call last):

File "C:\Python27\Lib\unittest\suite.py", line 146, in _handleClassSetUp

setUpClass()

File "C:\ws\Selenium-Framework-master\testsuites\test_baidu_search.py", line 16, in setUpClass

cls.driver = browse.open_browser(cls)

File "C:\ws\Selenium-Framework-master\framework\browser_engine.py", line 45, in open_browser

driver.maximize_window()

File "C:\Users\Administrator\PycharmProjects\untitled\venv\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 728, in maximize_window

self.execute(command, {"windowHandle": "current"})

File "C:\Users\Administrator\PycharmProjects\untitled\venv\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 314, in execute

self.error_handler.check_response(response)

File "C:\Users\Administrator\PycharmProjects\untitled\venv\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 242, in check_response

raise exception_class(message, screen, stacktrace)

WebDriverException: Message: unknown error: cannot get automation extension

from unknown error: page could not be found: chrome-extension://aapnijgdinlhnhlmodcfapnahmbfebeb/_generated_background_page.html

(Session info: chrome=66.0.3359.181)

(Driver info: chromedriver=2.29.461591 (62ebf098771772160f391d75e589dc567915b233),platform=Windows NT 6.1.7601 SP1 x86_64)

查找原来是chrome 浏览器和chromedriver 版本不一致

虽然我下载了和chrome浏览器一致的chromdriver，也放到c盘widows目录环境变量中去了，但是在代码中指定的chromedriver 位置中存放的还是旧版本。更换好对应版本的chromedriver后就好了